//package cn.ismartv.voice;
//
//import java.io.BufferedReader;
//import java.io.DataOutputStream;
//import java.io.File;
//import java.io.FileInputStream;
//import java.io.IOException;
//import java.io.InputStream;
//import java.io.InputStreamReader;
//import java.net.HttpURLConnection;
//import java.net.URL;
//
//import javax.xml.bind.DatatypeConverter;
//
//import org.json.JSONObject;
//
//public class Sample {
//
//    private static final String serverURL = "http://vop.baidu.com/server_api";
//    private static String token = "";
//    private static final String testFileName = "test.pcm";
//    //put your own params here
//    private static final String apiKey = "";
//    private static final String secretKey = "";
//    private static final String cuid = "";
//
//    public static void main(String[] args) throws Exception {
//        getToken();
//        method1();
//        method2();
//    }
//
//    private static void getToken() throws Exception {
//        String getTokenURL = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials" +
//            "&client_id=" + apiKey + "&client_secret=" + secretKey;
//        HttpURLConnection conn = (HttpURLConnection) new URL(getTokenURL).openConnection();
//        token = new JSONObject(printResponse(conn)).getString("access_token");
//    }
//
//    private static void method1() throws Exception {
//        File pcmFile = new File(testFileName);
//        HttpURLConnection conn = (HttpURLConnection) new URL(serverURL).openConnection();
//
//        // construct params
//        JSONObject params = new JSONObject();
//        params.put("format", "pcm");
//        params.put("rate", 8000);
//        params.put("channel", "1");
//        params.put("token", token);
//        params.put("cuid", cuid);
//        params.put("len", pcmFile.length());
//        params.put("speech", DatatypeConverter.printBase64Binary(loadFile(pcmFile)));
//
//        // add request header
//        conn.setRequestMethod("POST");
//        conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
//
//        conn.setDoInput(true);
//        conn.setDoOutput(true);
//
//        // send request
//        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
//        wr.writeBytes(params.toString());
//        wr.flush();
//        wr.close();
//
//        printResponse(conn);
//    }
//
//    private static void method2() throws Exception {
//        File pcmFile = new File(testFileName);
//        HttpURLConnection conn = (HttpURLConnection) new URL(serverURL
//                + "?cuid=" + cuid + "&token=" + token).openConnection();
//
//        // add request header
//        conn.setRequestMethod("POST");
//        conn.setRequestProperty("Content-Type", "audio/pcm; rate=8000");
//
//        conn.setDoInput(true);
//        conn.setDoOutput(true);
//
//        // send request
//        DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
//        wr.write(loadFile(pcmFile));
//        wr.flush();
//        wr.close();
//
//        printResponse(conn);
//    }
//
//    private static String printResponse(HttpURLConnection conn) throws Exception {
//        if (conn.getResponseCode() != 200) {
//            // request error
//            return "";
//        }
//        InputStream is = conn.getInputStream();
//        BufferedReader rd = new BufferedReader(new InputStreamReader(is));
//        String line;
//        StringBuffer response = new StringBuffer();
//        while ((line = rd.readLine()) != null) {
//            response.append(line);
//            response.append('\r');
//        }
//        rd.close();
//        System.out.println(new JSONObject(response.toString()).toString(4));
//        return response.toString();
//    }
//
//    private static byte[] loadFile(File file) throws IOException {
//        InputStream is = new FileInputStream(file);
//
//        long length = file.length();
//        byte[] bytes = new byte[(int) length];
//
//        int offset = 0;
//        int numRead = 0;
//        while (offset < bytes.length
//                && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
//            offset += numRead;
//        }
//
//        if (offset < bytes.length) {
//            is.close();
//            throw new IOException("Could not completely read file " + file.getName());
//        }
//
//        is.close();
//        return bytes;
//    }
//}
